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1. WO1982003095 - HIGH-RATE CHROMIUM ALLOY PLATING

Publication Number WO/1982/003095
Publication Date 16.09.1982
International Application No. PCT/US1982/000070
International Filing Date 21.01.1982
IPC
C25D 3/56 2006.1
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; JOINING WORKPIECES BY ELECTROLYSIS; APPARATUS THEREFOR
3Electroplating; Baths therefor
02from solutions
56of alloys
C25D 5/04 2006.1
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; JOINING WORKPIECES BY ELECTROLYSIS; APPARATUS THEREFOR
5Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
04Electroplating with moving electrodes
CPC
C25D 3/56
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
3Electroplating: Baths therefor
02from solutions
56of alloys
C25D 5/04
CCHEMISTRY; METALLURGY
25ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
DPROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
5Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
04Electroplating with moving electrodes
Applicants
  • BATTELLE DEVELOPMENT CORPORATION [US]/[US]
Inventors
  • SCHAER, Glenn, R.
Agents
  • BISSELL, Barry, S. @
Priority Data
241,66309.03.1981US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) HIGH-RATE CHROMIUM ALLOY PLATING
(FR) PLACAGE A HAUTE VITESSE AVEC UN ALLIAGE AU CHROME
Abstract
(EN) High-speed plating of corrosion-resistant, chromium alloy coatings from divalent/trivalent chromium solutions is feasible with high current densities, rapid solution flow and careful control of pH. Chromium-iron-nickel alloy coatings are plated on copper cathodes, for example, from trivalent chromium baths at 30 microns per minute and 160 A/dm2. Current densities in the range of about 75-400 A/dm2 (5-26 A/in2) are most useful.
(FR) Le placage a haute vitesse au moyen de revetements en alliage au chrome resistants a la corrosion a partir de solutions de chromer bivalent/trivalent est realisable avec des hautes densites de courant, un ecoulement rapide de la solution et un controle precise du pH. Des revetements en alliage au chrome-fer-nickel sont plaques sur des cathodes en cuivre, par exemple, dans des bains de chrome trivalent a un regime de 30 microns la minute et 160A/dm2. Des densites de courant comprises dans la gamme d'environ 75-400A/dm2 (5-26A/in2) sont les plus utiles.
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